1. A stream represents flow of data from one place to another place.
  2. forex yuan dollar Input Stream:Which receive or read data coming from some other place.
  3. موقع فوركس Output Stream:Which send or write data to some other place.

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Stream Description
System.out It represents monitor(PrintStream object)
System.in It represents keyboard(InputStream object)
System.err It Represents PrintStream object,Which is by default represents monitor.

Difference between System.out and System.err?

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